Perhaps you should try some spelling variations:
nhanh thanh » phan thanh, nhanh tinh
thong cong » trong cong, tong cong, thong thong
hieu tinh » chieu tinh, lieu tinh, kieu tinh
thanh cua » tranh cua, than cua, hanh cua
cua thong » cua thuong, cua khong, cua tong
doc hieu » toc thieu, hoc thieu, hoc hien
cong dan » cong san, cong tan, huong dan
toan ban » van ban

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu tinh - nhanh thanh cua thong cong dan ((((toan tap) or (toan ban))) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu tinh - nhanh thanh cua thong cong dan ((((toan tap) OR (toan ban))) OR (toan cao)).
• Adding a wildcard symbol may retrieve word variants: doc hieu tinh - nhanh thanh cua thong cong dan ((((toan tap) or (toan ban))) or (toan cao))*.